Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1990 Chevrolet Blazer 5.7 K, StandardFACTORY OEM SERVICE PROCEDURE
Reverse Input Clutch: Disassembly
- Remove retaining ring from reverse input clutch housing. Remove backing plate, steel clutch plates, composition plates and Belleville plate. See Figure . Note number of clutch plates used. Using Clutch Spring Compressor (J-23327), compress reverse input spring assembly.
- Remove retaining ring. Remove clutch spring compressor, and remove spring assembly. Remove piston and seals. Thickness of composition plates should be .068-.074" (1.73-1.88 mm). Selective thickness backing plate is also used.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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